BS 949-4:1990现行
Screwing taps. Specification for metric ground thread taps: manufacturing tolerances
出版：British Standards Institution
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基本信息
标准编号： BS 949-4:1990
发布时间：1990/6/29 0:00:00
标准类别：Standard
出版单位：British Standards Institution
标准页数：28
标准简介
Manufacturing tolerances on the threaded portion of taps for producing ISO metric threads of tolerance classes 4H to 8H and 4G to 6G. Valid for short taps specified in ISO/R 529 as well as any other kind of ground thread taps with the same diameters and pitches.
标准备注
© British Standards Institution 2013
等同采用的国际标准
ISO 2857:1973 - Identical
